Flat C, 44, Onslow Gardens has an Energy Performance Rating (EPC) of C. This is based on the most recent assessment, dated 11 Feb 2026.

The property is connected to mains gas and has partial double glazing. It is heated using a boiler and radiators (mains gas).

Land Registry records and our Estate Agent network show 22 sales of comparable properties within 240 metres of Flat C, 44, Onslow Gardens since 2009.

Most recently, Flat 5, 21, Onslow Gardens, London, SW7 3AL, a leasehold flat, sold at £3,700,000 on the 13th February 2026.

Read more about house prices in SW7.

• Sold Feb 2026£3,700,000 | 4 Bed FlatFlat 5, 21, Onslow Gardens, London, SW7 3ALFlat 5, 21, Onslow Gardens, London, SW7 3AL
• Sold Sep 2025£3,650,000 | 3 Bed Flat60, Rose Square, London, SW3 6RS60, Rose Square, London, SW3 6RS
• Sold Aug 2025£2,500,000 | 3 Bed FlatFlat 10, 81, Onslow Square, London, SW7 3LTFlat 10, 81, Onslow Square, London, SW7 3LT
• Sold Jul 2025£2,190,000 | 3 Bed FlatFlat 1, 23, Sumner Place, London, SW7 3EGFlat 1, 23, Sumner Place, London, SW7 3EG
• Sold Mar 2025£3,500,000 | 3 Bed FlatFlat 3, 26, Onslow Gardens, London, SW7 3AGFlat 3, 26, Onslow Gardens, London, SW7 3AG
• Sold Jun 2022£3,500,000 | 3 Bed Flat65, Rose Square, London, SW3 6RS65, Rose Square, London, SW3 6RS
• Sold Nov 2021£3,250,000 | 3 Bed FlatFlat 10, 20, Cranley Gardens, London, SW7 3DAFlat 10, 20, Cranley Gardens, London, SW7 3DA
• Sold Sep 2021£3,500,000 | 3 Bed Flat64, Rose Square, London, SW3 6RS64, Rose Square, London, SW3 6RS
• Sold Aug 2021£11,500,000 | 4 Bed Flat43, Onslow Gardens, London, SW7 3PY43, Onslow Gardens, London, SW7 3PY
• Sold Feb 2020£3,870,000 | 3 Bed Flat68, Rose Square, London, SW3 6RS68, Rose Square, London, SW3 6RS
• Sold Aug 2019£950,000 | 4 Bed FlatFlat 10, 97, Onslow Square, London, SW7 3LUFlat 10, 97, Onslow Square, London, SW7 3LU
• Sold Oct 2018£3,400,000 | 4 Bed FlatFlat 8, 78, Onslow Gardens, London, SW7 3QBFlat 8, 78, Onslow Gardens, London, SW7 3QB
• Sold Dec 2017£3,050,000 | 4 Bed FlatFlat 1, 35, Onslow Gardens, London, SW7 3PYFlat 1, 35, Onslow Gardens, London, SW7 3PY
• Sold Dec 2016£3,000,000 | 3 Bed FlatFlat 1, 30, Onslow Gardens, London, SW7 3AHFlat 1, 30, Onslow Gardens, London, SW7 3AH
• Sold Apr 2015£4,250,000 | 4 Bed FlatFlat 7, 81, Onslow Square, London, SW7 3LTFlat 7, 81, Onslow Square, London, SW7 3LT
• Sold Mar 2015£2,300,000 | 4 Bed FlatFlat 4, 38, Onslow Gardens, London, SW7 3PYFlat 4, 38, Onslow Gardens, London, SW7 3PY
• Sold Jun 2014£4,260,000 | 3 Bed Flat52, Rose Square, London, SW3 6RS52, Rose Square, London, SW3 6RS
• Sold Dec 2013£3,700,000 | 3 Bed Flat54, Rose Square, London, SW3 6RS54, Rose Square, London, SW3 6RS
• Sold Jul 2011£900,000 | 4 Bed FlatFlat 5, 34, Onslow Gardens, London, SW7 3AQFlat 5, 34, Onslow Gardens, London, SW7 3AQ
• Sold Jul 2009£2,650,000 | 4 Bed FlatFlat 2, 7, Onslow Gardens, London, SW7 3LYFlat 2, 7, Onslow Gardens, London, SW7 3LY

Our analysis of the public data ranks Flat C, 44, Onslow Gardens as the 49th largest and the 56th most expensive of the 504 addresses on Onslow Gardens, London, SW7.

Against the SW7 postcode district average, it is £1.134m more expensive than the typical property.

• Our Lady of Victories RC Primary School

  200 m away
• Oratory Roman Catholic Primary School

  500 m away
• Bousfield Primary School

  600 m away

• St. Thomas More Language College

  1.1 km away
• The London Oratory School

  1.6 km away
• Chelsea Academy

  1.6 km away

• South Kensington

  |

  400 m away
• Gloucester Road

  |

  500 m away
• Earl's Court

  |

  1.1 km away

Environment Agency data suggests this area has a Very Low risk of flooding.